Tag closed tester

Elammability and Ignitability The concentrated product will not be ignit-able (i.e., the flashpoint for the compound will be above 140°F). The flashpoint of the solvent should be determined using either the Cleveland Open Cup Tester (ASTM D92-97) or a Tag Closed Tester (ASTM D56-97). 

FLASH POINT OF LIQUIDS BY TAG CLOSED TESTER (ASTM Designation D56—70)... 

This method covers the decn of the flash point, by Tag closed tester, of liquids with a viscosity of below 45 SUS at 100F (37.8 C) and a fl pt below 200 F (93 C) except cut-back asphalts and those liquids which tend to form a surface film under test conditions Note 1 For the closed cup fl pt of liquids with... 

Tag Closed Tester — The apparatus is shown in Fig 11 and described in detail in Appendix Al Refer to Appendix A2 for directions for checking the condition and operation of the tester... 

Al.l The low-range thermometer, which conforms also to the specifications of the cup thermometer in the Tag Closed Tester (ASTM Method D 56, Test for Flash Point by Tag Closed Tester) and which frequently is fitted with a metal ferrule intended to fit the collar on the lid of the Tag Flash Tester, can be supplemented by an adapter (Fig Al) to be used in the larger diam collar of the Fen sky-Martens apparatus. Differences in dimensions of these collars, which do not affect test results are a source of unnecessary trouble to manufacturers and suppliers of instruments, as well as to users... 

Pensky-Martens closed tester, Tag closed tester. 

Tag closed tester—apparatus for determining the flash point of petroleum liquids having a viscosity below 5.8 centistokes (cSt) at 37.8°C (100°F) and a flash point below 93°C (200°F), under test methods prescribed in ASTM D 56. The test sample is heated in a closed cup at a specified constant... 

Reproducibility — Two results, each the mean of three detns, obtained by operators in different laboratories should be considered suspect if they differ by more than 24 F (13-3C) FLASH POINT OF LIQUIDS BY TAG CLOSED TESTER (ASTM Designation D56—70)... 

ASTM D 3828-93, Standard test methods for flash point by small scale closed tester ASTM D 56-93, Standard test method for flash point by tag closed tester... 

Flash and fire points are two very important physical properties, which are of interest from the standpoint of safety and ignition characteristics. The flash point is the temperature at which the vapor above an oil will momentarily flash when in the presence of a flame, while the fire point is the temperature at which the vapors are vaporized quickly enough to have a sustained flame. The flash point is determined by using an open cup and Pensky-Martens closed tester for heavy oils and a tag closed tester for light oils. The vapor pressure-temperature relationship can be written as... 

The test method for determination of the flash point by Pensky-Martens closed tester (ASTM D-93, IP 34) and the test method for determining flash point by the tag closed tester (ASTM D-56) are employed for fuel oil. 

The Pensky-Martens closed tester (ASTM D-93, IP 34) and the tag closed tester (ASTM D-56) are normally used for determining the flash point of fuel oil and similar products. The Cleveland open cup method (ASTM D-92) is most commonly used, although the Tag open cup (ASTM D-3143) is applicable to cutback asphalt. As noted above, the flash point of asphalt is an indication of fire hazard and is frequently used to indicate whether asphalt has been contaminated with materials of lower flash point. 

Flash Point by Tag Closed Tester," Amer. Soc. for Test, and Mater., ASTM D56 (1975). 

Closed-cup tester A device for determining flash points of flammable and combustible liquids, utilizing an enclosed cup or container for the hquid. Recognized types are the Tagliabue (Tag) Closed Tester, the Pensky-Martens Closed Tester, and the Setaflash Closed-Cup Tester. 

ASTM Test Method for Flash Point for Tag Closed Tester (D 56). 

Nonflammable—A term used to describe those halogenated solvents that have no fire or flash point when tested by standard test methods. The Department of Transportation specifies ASTM Test Method for Flash Point by Tag Closed Tester (D 56) or ASTM Test Methods for Flash Point of Liquids by Setaflash-Closed-Cup Apparatus (D 3278) as acceptable test methods for determining flash points of liquids. Under unusual conditions, certain nonflammable solvents may exhibit some ability to burn. 

A variety of apparatus such as the small scale closed tester, flic tag open cup, the tag closed tester,the Cleveland open cup, the Pensky-Martens closed cup, and the equilibrium method are used to determine the flash point. The selection of method is based suggestions included in separate standard. ... 

The tag open cup is a larger unit equipped with water-glycol bath for temperature control or a solid carbon dioxide-acetone bath for lower flash points. A much larger sample is used with this equipment and the temperature is gradually increased at a rate of TC/min. A taper flame is passed for 1 s in 1 min intervals until the flash point is detected. The tag closed tester can use either a manual or an automated procedure. A sample volume of 50 ml is used. Either a gas flame or an electric ignitor is used. In the automated mode, the equipment is programmed to perform the standard procedure. 

ASTM D 56-97a. Standard test method for flash point by tag closed tester. 

The lowest temperature at which the vapor of a combustible liquid can be made to ignite momentarily in air, as distinct from fire point. Flash point is an important indicator of the fire and explosion hazards associated with a petroleum product. There are a number of ASTM tests for flash point, e.g., Cleveland open cup, Pensky-Martens closed tester, Tag closed tester. Tag open cup. 

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